Added new memory, now computer won't boot at all

Hello
I added a new pair of 2*8GB Coursair memory along with my old memory which was 2*2GB, for a total of 20GB Ram. It was working fine for a day (except one random restart), but got steadily worse. Yesterday iMac was shutting and restarting more frequently. I decided to remove the old pair thinking the different brands may be causing a disturbance. I did, but the restarting didn't stop. I removed them again to try put it back more firmly or something, that was the last time my iMac booted. It will show the apple logo, then some short loading bar will come up, then it would promprtly shut down.
I tried putting back my original RAM and it still wouldn't boot. Tried them individually, new old, different slots, nothing worked.
So I guess I damaged my memory slots or all my RAM modules stopped working. Any ideas what to do next? I've already requested a replacement for the new RAM.
Some extra info:
-Old ram was running at 1333Hz and new one was 1666Hz, I tried them together .
-First time I tried to remove RAM, I tried to pluck them out with my hands by leveraging the sides with a small screw driver. Realised I had to pull the black thing later on. Don't think I applied too much force though.

Well, you should not mix different specs RAM. And, it's best to purchase RAM for the very finicky Macs from either OWC (macsales.com) or Crucial which guarantee the RAM to be Mac compatible and offer a lifetime warranty.
I would guess that the new incorrect spec RAM is the problem. Additionally, you might have damaged the slots inadvertantly.
You might need to take it to your nearest Genius Bar for a free evaluation. Additionally, I would return the RAM as not being compatible.

Similar Messages

Installed new bios and now computer won't boot

I just installed the new bios for my HP Pavilion dv6704nr Entertainment Notebook PC laptop off the hp website and now my computer won't boot. I tried removing all power (including the 3 volt battery) and it still won't turn on. I Then tried the windows + B keys at boot and still nothing. I have windows7 64 bit OS and installed the vista 64 bit bios (the only 64 bit bios they had). Any help would be greatly appreciated.
Thanks

try runnng system restore from recovery manager, if the OS is changed then run recovery
***Click on “Kudos” STAR to say thanks!***

Installed os X Mountain Lion and now computer won't boot (first had keyboard issues-reverse caps)

Hi all,
I just updated my macbook air to osX mountain lion and now it will not boot at all.. At first I was having issues with the keyboard and keys typying weird characters.. and the caps lock was stuck on reverse. Now I have nothing.. Can someone help.

What happens when you try to boot?

New Mobo- Now OS won't boot

Help!!!!!!!!!!!!
Here are my specs that i have now:
865PE NEO2-FIS2R
FX5600-VTD256
WD800 (w/ 8mb cache)
Intel 2.6 (Northwood)
300 Watt PSU (i don't know what info is relevant)
Ram 256 (333) i think - I don't know how to check the specs
WinXP Pro (upgraded from 98SE)
Problem:
I had all MSI components before. I brought over the HDD that had XP Pro on it. First time up it just boot up to the Safe Mode screen. 2 Beeps then a reboot to the Safe Mode again, and it keeps doing this. Note: the new mobo didn't do the regular system inventory, proc speed, ram etc. But the BIOS found everything.
Tried a boot disk, it then said that the OS had problems and couldn't boot.
I am a little fuzzy on the BIOS, so if you can help me out. I am not messing with RAID or SATA. Are there any specifics I should know. I did set ram voltage to 2.7.
I tested the Western Dig HDD and with their diag and it came out perfect. I tried to repair XP but it fails everytime. Here is the error that it gives. C:\$WIN_NT$.~LS\I386\asms "One of the components Windows needs to continue setup could not be installed."
I was beginning to think it was Gates' fault (imagine that). But then i dropped in a Win2K HDD that i had tested on another system at work. And the new HDD won't boot up either. It tries to boot up, the Win2K screen flashes and then straight to a Blue Screen. It says "Inaccessible_BOOT_Device"
Help Please!!! Let me know what other info might be helpful.
[email protected]

Well, i did finally get it to take the OS. But it would not boot to the HDD. When you first start up the pc it sets on autodetect of the primary for over 30 seconds and never finds it. You could manual boot to the HDD by a F11. I finally figured out how to flash the bios, so now i am up to date on that.
Now it will boot to the hdd, but it takes over 2 minutes and a lot of just black screen. Is there a setting I am missing in the BIOS?
I am not running any sata or raid configs. Could someone give me the basic setup for this, especially where the ide config is concerned. Or why it is taking so long to boot up. I know it isn't normal for my 1.6 never took that long.
Thanks for all of your help.
Matt

Uninstalled Trial version of Elements 7 (Trial Version) Now Computer won't boot

Hi All,
Thanks for reading......
I installed Elements 7 Yesterday (Trial) to await my purchased version, so I could get the 'feel' of the program .......
Today my software arrived, read the booklet (Getting Started) which say's "it's a good idea to uninstall the trial version first", this I did and re-booted the computer but it will not start as normal, left with a blank screen with flashing cursor at the top left of the screen.....
Win XP Pro SP3
Any advice, help please

There have been many users here in the forum who have been successfully been able to uninstall PSE 7 trial from the Windows XP SP3 machine without running into such kind of error. I believe this problem is not related with PSE7.
May be you can do some troubleshooting with Ms
Regards,
Ankush

Computer won't boot at all-no fan noise or screen

My mac recently shut itself off and refused to start up again. It had been giving me problems prior to this-I would boot up and the monitor wouldn't display, even though I could here programs starting and whatnot. Occasionally it would boot and not display the menu bar on the top of the screen. I was crossing my fingers and hoping it wasn't anything too bad.
But now it's broke. When I hold down the power button, the white LED lights up, as well as some red light in the machine itself. There's a CLICK-CLICK noise when I press the button, and after the second click, the red light goes out. When I lift my finger, the white light goes out.
I'd love to run the Hardware Test, but how do you get the CD tray open with the machine off?
I've tried to look the problem up, but most of the help seems to involve actually having your computer turn on at least halfway.

Hi Para_chan;
From the sound of your problems, it sounds like the power supply has quit but that is only a guess at this point. Since you are unable to get it to turn on you will probably have to take it into the Apple Store where they have more resource to figure out what is wrong with it.
Allan

Computer won't boot at all after 10.5.7 update

After installing the 10.5.7 update, and having it hang on the blue screen (as plenty of others did), my mini will not boot past the grey apple logo screen.
I have tried rebooting several times as this seemed to help some others, as well as holding down the Shift key to boot in safe mode, all to no avail.
I inserted the OS X install disk, and ran disk and permissions repair multiple times, also to no avail.
What should I do to get OS X up and running again?
Cheers.

Thanks for the tip. I posted a new question under "deciphering panic log" as well. Here's what I found:
Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x0000000000000004 PC=0x00000000004984E4
Latest crash info for cpu 0:
Exception state (sv=0x1ad3c000)
PC=0x004984E4; MSR=0x00009030; DAR=0x00000004; DSISR=0x40000000; LR=0x00498574; R1=0x19B039C0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x004983E0 0x00498368 0x00498E20 0x0049AFB4 0x0049A69C 0x003577C8
0x00357884 0x00348B48 0x0034B0BC 0x0034A1DC 0x000B1DD4
Proceeding back via exception chain:
Exception state (sv=0x1ad3c000)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x19ae5780)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
BSD process name corresponding to current thread: Unknown
Mac OS version:
Not yet set
Kernel version:
Darwin Kernel Version 9.7.0: Tue Mar 31 22:54:29 PDT 2009; root:xnu-1228.12.14~1/RELEASE_PPC
System model name: PowerBook6,5
System uptime in nanoseconds: 39721061252
unloaded kexts:
(none)
loaded kexts:
com.apple.nke.applicationfirewall 1.6.77 - last loaded 729386943
com.apple.driver.AppleKeyLargo 1.7.2f1
com.apple.driver.AppleI2C 4.0.0d2
com.apple.driver.AppleMacRiscPCI 3.4.0
com.apple.driver.AppleCore99NVRAM 1.1.1
com.apple.driver.AppleFlashNVRAM 1.0.5
com.apple.iokit.IOHIDFamily 1.5.5
com.apple.driver.DiskImages 199
com.apple.BootCache 30.4
com.apple.driver.AppleMacRISC2PE 1.8.7d5
com.apple.iokit.IOKeyLargo 1.7.2f1
com.apple.iokit.IOStorageFamily 1.5.6
com.apple.driver.IOPlatformFunction 1.8.7d5
com.apple.iokit.IOPCIFamily 2.6
panic(cpu 0 caller 0xFFFF0003): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x0009CC88 0x0009D63C 0x00029DA0 0x000B0A10 0x000B4278
Proceeding back via exception chain:
Exception state (sv=0x1ad3c000)
PC=0x004984E4; MSR=0x00009030; DAR=0x00000004; DSISR=0x40000000; LR=0x00498574; R1=0x19B039C0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x004983E0 0x00498368 0x00498E20 0x0049AFB4 0x0049A69C 0x003577C8
0x00357884 0x00348B48 0x0034B0BC 0x0034A1DC 0x000B1DD4
Exception state (sv=0x19ae5780)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
BSD process name corresponding to current thread: Unknown
unloaded kexts:
(none)
loaded kexts:
com.apple.nke.applicationfirewall 1.6.77 - last loaded 729386943
com.apple.driver.AppleKeyLargo 1.7.2f1
com.apple.driver.AppleI2C 4.0.0d2
com.apple.driver.AppleMacRiscPCI 3.4.0
com.apple.driver.AppleCore99NVRAM 1.1.1
com.apple.driver.AppleFlashNVRAM 1.0.5
com.apple.iokit.IOHIDFamily 1.5.5
com.apple.driver.DiskImages 199
com.apple.BootCache 30.4
com.apple.driver.AppleMa`

PT880 Neo - Won't Boot at all

Help me anyone!
My computer won't boot at all. I recently put it together and the bios works all the way to the Boot-start (accordingly to D-bracket) but nothing happends after that. The bios recognices the SATA, floppy, DVD and the CDrom (all at once or one by one - standalone). I'am trying to install Windows XP Prof sp1a.
- I've tried with full system (SATA, DVD, CDrom and Floppy).
- I've tried with only the DVD (disabled SATA).
- I've tried with only the CDrom (disabled SATA).
- I've even tried with only the floppy (windows 98 start floppy).
- I've tried two different Win XP prof disc's.
- I've tried with or without PATA-IDE and SATA and all the possible
combination of them.
Since the computer won't read from the DVD, CDrom or the floppy I can't
flash the bios or install the RAID-driver from the floppy. After reading about the +12 Amp in this forum I changed PSU to Aspire but it didn't help. I really need help from you all because I'm so tired of trying now and I GOT THREE SIMILAR COMPUTERS ACTING THIS WAY ON MY KITCHENTABLE right now (for me and for two friends). I can't bellieve I was so unlucky as to receive 3 MoBo's that won't work so It has to be something else. One strange thing though - The press F11 for BOOT meny (boot order) doesn't work at all - otherwise the Bios seems to work as it should.
Best regards
Lars

I've got the same problem with a P4 3.2E. At times I get into "Windows loading" before rebooting, other times it freezes at a black screen just past POST (with a blinking cursor in upper left-hand corner). One time I actually got to desktop and just as icons were appearing, it rebooted. It really seems memory related to me. Running PC4200, I set all timings as loose as possible, make sure there was enough voltage going everywhere, but still no success. I'm going to try swapping in my 2.8C northy to flash to BIOS 1.4, and I PM'ed NovJoe for that beta...hoping he'll be kind enough to shoot it to me. This is just a backup board while I prepare my IC7 for thermo electric cooling, and while I am impressed with all the options and voltage ranges in BIOS (from an extreme OC'ing standpoint), I'm not too impressed with this supposedly "Prescott Ready" board so far. Hoping I can get this thing solved tonight, cuz I lost out on a night of gaming last night.

Please Help: Installed new CPU (i7) now system won't boot.

I'm hoping someone can help.
I have an MSI H55M-P31 (MS-7636) motherboard, and I updated the BIOS to 1.A0.
But when I installed the new CPU, I get 3 Long beeps, and then my computer won't boot.
I have 4Gigs of Memory
Current CPU: (working 100%)
3.07 gigahertz Intel Core i3 540
64 kilobyte primary memory cache
256 kilobyte secondary memory cache
4096 kilobyte tertiary memory cache
64-bit ready
Multi-core (2 total)
Hyper-threaded (4 total)
500watt PSU
Please Help, I don't know what to do now. (did check CPU compatibility on website - i7870)

What PSU is that and what are the ratings of that PSU ? See the label on the side.
Are you trying to use the onboard graphics?
That CPU does not have integrated graphics. http://ark.intel.com/products/41315

Is there an emergency eject hole on the newer iMacs. disk stuck in drive and computer won't boot.

Is there an emergency eject hole on the newer iMacs? I have a disk stuck in the drive and the computer won't boot. Need to get this disk out to load repair disk.

If you are getting nothing at all you should take it in for repairs.

Updated OS to 10.5.7, now computer won't start properly...

Updated to OS 10.5.7 three days ago. After installation, system prompted restart (as usual). I clicked "restart", system properly shut down, then began to restart, then was stuck in restart mode for 3 hours! Gray screen with apple icon appeared, along with circling lines indicating it was "thinking" (I guess), then finally it just shut off. Now, it won't restart at all, just goes to gray screen for a few minutes, then goes black. Tried restarting from the system disk (10.5) which came with the computer, but I then get an alert saying it can't restore software because it can't find 10.4 or newer on the system. It shows my computer, with 10.5.7 on the startup disk menu, but selecting it and restarting throws me back into the gray screen/shut down loop.

Try starting in a different account or Safe Mode. Other issues have been related to font problems. You can test for this if things work in Safe Mode. A different account will check if it is something specific to your account.
[Mac OS X: Starting up in Safe Mode|http://docs.info.apple.com/article.html?artnum=107393]
[What is Safe Boot, Safe Mode? (Mac OS X)|http://support.apple.com/kb/HT1564]
[Safe Boot takes longer than normal startup|http://docs.info.apple.com/article.html?artnum=107394]
[Mac OS X 10.4, 10.5- Computer shuts down during Safe Boot|http://support.apple.com/kb/TA24054]
Safe boot mode runs a directory check command similar to that used by Disk Utility's repair. In Tiger it ignores some stored information (cache) that is normally read that speeds up the boot process, and it moves some other caches to the trash. It also uses only System fonts and disables all Startup Items, third party items, and any Login Items.
By the way, did you repair permissions with Disk Utility before and after doing hte update?

My hard drive failed, has been replaced, and now it won't boot to CD.

My hard drive failed, has been replaced, and now it won't boot to CD to install the OS package. It would boot for a while, get through the first cd of install and would stop randomly in the next install. I found out that the installation disk was cracked so I went out and purchased the Mac Box Set which includes Mac OS X Snow Leopard, iLife '09 and iWork '09 under advisement from an associate at the local apple store. Now, I try installing this new OS disk and all I get is the apple logo without a spinning wheel for about 10 minutes and the computer restarts and does it again. I have tried booting from disk, holding c while starting up, and in safemode, holding shift while booting. Please help save my poor poor macbook!!!

These errors look like corrupt or missing files that leopard requires. It sound like you need to start from scratch: format your drive, reload Leopard. I realize that this is probably what you are trying to do.
If you cannot boot from install DVD and cannot successfully get into Safemode or Single usermode (due to a corrupt or incomplete install) then you will need another computer to assist you.
If you can get it into Target Disk Mode and have another Mac you could plug it into that Mac and reformat it.
If it will not go into TDM then you may need to take it out and put it into an external enclosure to plug into another Mac to format it.

Computer won't boot if the GTX 970 is plugged in

Hello everyone,
I just recently bought and assembled a new computer, however, the computer won't boot when the gpu is plugged in.
The motherboard I got is a MSI Z97I Gaming AC and the GPU is a MSI GeForce GTX 970.
When the GPU isn't plugged in the mobo, everything boots up fine and I was able to check with the bios that every other elements of the computer where recognized fine. When I plug in the GPU however, the system won't boot. The fans of the case, the mobo AND the GPU's are working and the GPU's leds also on, so it shouldn't be a PSU issue (I use a 750W PSU so that should cover it). However, no boot at all.
I don't really feel like trying to plug the GPU in another computer if it's just some compatibility issue or whatnot that you may be aware of. Maybe the bios doesn't recognise it ? The version is e7920IMS V1.0, I wasn't really able to find any kind of information regarding the latest versions online.
Thank you,
Yann

Here it is, follow the below to update to 1.4:
>>Use the MSI HQ Forum USB flasher<<
A.) Download the attached archive and place it on your desktop. Do not decompress.
B.) Download and install the Forum flash tool.
C.) Insert your FAT32 formatted usb stick.
D.) Make sure that all win 8 options are disabled. (Fast Boot etc) Also make sure the legacy USB is enabled.
E.) Start the forum flash tool and select option 1. Then point the tool at the compressed archive we downloaded earlier. Then to your USB Flash Drive.
F.) Boot to the USB
G.) Now follow the directions and let the tool flash
H.) After flashing reinstall ME drivers in Windows: http://download.msi.com/dvr_exe/intel_me10_mb.zip

Computer won't boot up after installing SIIG card

Hey Everyone,
I having problems with my SIIG FireWire 2-Port PCIe DV card that I've installed into my PowerMac G5 Quad. With the card installed the computer will not boot up, which is the same thing that happened with my previous two models of the card. I installed a new card yesterday and it worked fine all day, but after shutting the computer down for the night and then restarting it in the morning I am experiencing the same problems. The light on the front of the computer turns on, but the screen does not, and after about a minute a loud fan noise comes one. I have the card installed in Slot 2. In Slot 1 I have a ProTools HD card and in Slot 3 I have an AJA Kona LHE card. Even with all of the cards removed the computer still does not boot up. Anyone seen this problem before? Any help or information anybody can offer would be greatly appreciated.
PowerMac G5 Quad Mac OS X (10.4.8)

Hi, I had the same problem with my dual core G5.
I installed the card and my computer won't boot up. The screen stays gray and the fan keeps spinning.
I contacted SIIG and they said the card is defective, which, I doubt it is.
I then returned it for a refund.

Computer won't boot after installing MFP M127FW

My computer won't boot to my hard drive after installing my new MFP M127FW printer unless I first unplug the USB cable from the printer and then turn on the computer. My BIOS is set to boot from my hard drive, not from a USB drive, so what did the installation of the MFP M127FW drivers and software do to my computer? I assume this has something to do with the Smart Install feature.
This question was solved.
View Solution.

Hi @frcraig ,
I see that you are experiencing issues with the computer booting up when the printer is connected by the USB cable.
I would like to help you out with this issue today.
Most likely it is the Smart Install on the printer causing this. The printer looks like a disk drive.
On the printer, touch Setup, Service, Smart Install and turn it off.
If you are still having issues, in the system BIOS, disable the Boot from USB device option and the USB Legacy Support option. Doing this will allow the PC to complete the boot process to the internal hard drive and allow you to enter Windows. If this does not work for any reason, you should boot your PC before connecting the USB drive. Once the computer is fully booted into Windows, connect the USB drive and wait for the operating system to detect the drive.
Important: Do not disable the USB Legacy Support if you are using a USB Keyboard. Doing so will prevent you from being able to use the keyboard during the booting sequence.
What kind of computer do you have?
If you need further assistance, just let me know.
Have a great day!
Thank You.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Gemini02
I work on behalf of HP

Added new memory, now computer won't boot at all

Similar Messages

Maybe you are looking for